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研究了一种新的编码光栅投影三维轮廓术。其中投影光栅利用彩色空间红、绿、蓝三基色相互独立的特性 ,用彩色条纹对光栅进行编码 ,以白色条纹为起始位 ,后接红、绿、蓝 (R、G、B)三种颜色的条纹组成一组。改变红、绿、蓝的排列顺序可使各组有不同的编码。根据排列组合原理 ,红、绿、蓝三色可有 6种不同的排列方式。经过编码处理的光栅在保证测量精度不变的前提下 ,加大了高度测量的范围。由于每个条纹只采用 0和 2 55两个状态 ,因此具有较强的抗干扰能力。测量的精度主要取决于图像的分辨率。
A new coded raster projective 3D profilometry is studied. Among them, the projection grating utilizes the independent characteristics of the three primary colors of red, green and blue in the color space to encode the grating with the color stripes. The white stripes are used as the starting bits followed by the red, green and blue (R, G, B) A set of color stripes. Change the order of red, green and blue can make each group have different codes. According to the principle of permutation and combination, there are 6 different arrangements for red, green and blue colors. After coding the grating to ensure the accuracy of the premise of the same measurement, increased the scope of height measurement. As each stripe only uses 0 and 2 55 two states, it has strong anti-interference ability. The accuracy of the measurement depends mainly on the resolution of the image.